Table 1 Demographics and baseline spirometric data for young smokers with mild asthma (MA subgroup) and healthy young smokers (HS subgroup)

 Males

12 (54.5)

17 (68.0)

0.344*

 Females

10 (45.5)

8 (32.0)

Age (years)

23.6 (3.9)

23.2 (4.5)

0.525**

BMI (kg/cm²)

23.9 (2.9)

23 (3.4)

0.404**

Pack-years

3.6 (2.6)

3.6 (2.9)

0.747**

FVC (% pred.)

97.75 (10.6)

105.5 (10.8)

0.013**

FEV1 (% pred.)

90.58 (9.4)

109.5 (9.2)

<0.001**

FEV1/FVC (% pred.)

79 (5.6)

88.8 (5.3)

<0.001**

PEF (% pred.)

91.49 (12.3)

99 (13.1)

0.062**

FEF_25%-75% (% pred.)

71.44 (13.9)

112.7 (22.3)

<0.001**

FEF_25% (% pred.)

85.8 (16.6)

111 (16.6)

<0.001**

FEF_50% (% pred.)

76.46 (14.6)

114 (19.9)

<0.001**

FEF_75% (% pred.)

68.63 (20.0)

118 (39.6)

<0.001**